Dust-guard for axle-boxes



(No Model.)

J. W. HYATT.

DUST GUARD FOR AXLE BOXES. No. 388,136. Patented Aug. 21, 1888.

Fly;

Azzesz; jnven at 9% Join u PETERS, Pholcrukhogrlp'her. wmm mn. o. a

UNITED STATES PATENT OFFICE.

JOHN \V. HYATT, OF NE\VARK, NE? JERSEY.

DUST-=GUARD FOR AXLE -BOXES.

SPECIFICATION forming part of Letters Patent No. 388,136, dated August 21, 1888.

Serial No. 272,0. (No model.)

To all whomit' may concern.-

Be it known that I, JOHN W. HYAIT, a citizen of the United States, residing at Newark, Essex county, New Jersey, have invented certain new and useful Improvements in Dust- Guards for Axle-Boxes, fully described and represented in the following specification and the accompanying drawings, forming a part of the same.

The object of this invention is to furnish an efiective and durable means of excluding dust from axleboxes.

The device is applicable to all classes of axles andjournal-bearings, and is particularly designed for application to railroadcar axleboxes which are excessively exposed to dust and grit.

The improvement consists in an annular channel formed at the end of the journaLbox and filled with small lead shot or equivalent granules. Such granules move readily among themselves and are adapted to fit antomatieally against the revolving axle and to form a close joint therewith, while their freedom of movement adapts them to compensate fully for wear by settling into new positions from time to time.

By using ordinary bird-shot the granules would present a great many points of contact with the axle in a channel of very moderate width, and the material of such shot would be soft enough to wear into a closejoint with the shaft, while the anti-friction character of the metal would prevent them from opposing any material resistance to the move ment of the axle.

My invention is shown in the annexed drawingu applied to an anti-friction roller-bearing fora car-axle box, Figure 1 showing the axlebox in plan; Fig. 2 showing an end view of the same with the cap removed; Fig. 3, a longitudinal section on linear win Fig.1 upon twice the scale of such figure; and Figs. 4 and 5 are a side view and edge view, respectively, of the screw-cap upon the same scale as Fig. 3.

A is the shell of the axle-box, formed as a cylindrical sleeve,with ribs B, adapted to hold it in the car-pedestal.

C is the car-axle, and D represents the antifriction rollers fitted between the shell of the box and the axle.

L is a collar applied at one end of the shell and provided with an annular channel, E, filled with bird-shot, as shown in Fig. 3, to form the desired dust-guard.

F represents apertures leading from the interior of such channel within the shell A. G is the cap screwed in the front end of the box. and prevented from unscrewing by a bolt, H, tapped into one edge of the cap. The cap is provided with holes I to admit pins upon a spanner or wrench by which the cap would be screwed into the shell. Such cap is intended to screw tightly in the end of the box to exclude dust and to retain oil therein and to form the thrust-bearing for the end of the axle C. The roller-bearing shown in Fig. 3 is the same as that patented by me as No. 385,266, on June 26, 1888, and is designed to have a quantity of oil supplied within the casing, as by the threaded aperture J, having a screw-plug, K, fitted therein.-

A similar aperture, J, with screw-plug K, may be provided over the channel E to supply the birdshot or granules after the axle is placed within the box.

In practice the bird-shot in the channel E accommodate themselves to all the movements of the axle and form a continuous tightjoint in contact with its surface, while any oil that may escape from the interior of the box into contact with the shot would drain from the channel E back within the shell A through the apertures F. The rolls D have no necessary relation to my present invention,and the dust-guard may be applied to any bearing not containing rollers by forming the channel around one or both ends of the hearing, as may be desired, and supplying the bird-shot thereto after the axle is inserted in the bearing.

The channel E is shown as an annular groove in a collar formed integral with the inner end of the casing; but such channel may be formed in a separate collar or constructed around the axle in any convenient manner.

Although I have shown and described my invention as consisting, essentiall y,of an annular groove at each end of the bearing supplied with bird-shot, it is evident that any other suitable granular material might be used in the place of the bird-shot without departing from my invention.

Having thus set forth my invention, whatI tion, with such shell, of the channel E, proclaim herein is-- vided with loose metallic shot, and the aper- 1. In an axle-bearing, the channel E, suptures F,extending from the channel within the r 5 plied with loose metallic shot to fit closely shell to drain the oil thereto, substantially as 5 about the axle, as and for the purpose set forth. set forth.

2. The combination, with an axle-bearing, In testimony whereof I have hereunto set my of a collar applied to the end of the bearing hand in the presence of two subscribing 'witand provided with the channel E, supplied nesses.

with loose metallic shot,substantially as herein JOHN ll. HYATT. 10 set forth. \Vitnesses:

3. In an axle-bearing consisting in a shell THos. S. CRANE,

containing anti-friction rollers, the combina- HENRY J. MILLER. 

